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0. W. BURRITT. MACHINE FOR (moss SEAMING SHEET METAL. No. 307,521.

Patented Nov. 4, 18814.

1720671502:- 6771) W A (W177 (ModeL) 2 Sheets-Sheet 2. 0. W. BURRITT.

MACHINE FOR GROSS SEAMING SHEET METAL.

Pat ented Nov. 4, 1884.

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ORRIN WV. BURRITT, OF W'EEDSPORT, NEXV YORK.

MACHINE FOR CROSS-SEAIVHNG SHEET METAL.

LPEUEFICATION forming part of Letters Patent No. 307,521, dated November1884.

(ModeL) To all whom it may concern.-

Be it known that I, Onnnv XV. Bunnrrr, a citizen of the United States,residing at WVecdsport, in the county of Cayuga and State of New York,have invented a new and useful Improvement in a Machine for Closing theSeams of Sheet Metal, of which the following is a specification.

My invention relates to improvements in a machine for uniting thecrossseanis of sheet metal, producing a continuous strip for roofing orvalley purposes.

The objects of my improvements are, first,

to provide a bed-plate on legs or supports with standards and cross-barssuitable to guide a follower to and from the bed-plate by springadjustment, and for the attachment of leverpower to drive the follower;second, the construction of a cylinder-former supplied with gageheadsand shaft, so attached as to be adj usted by an angular movement, withspringratohet adapted to a reverse revolution, the hooks or catches ofthe cylinder arranged for coiling over or under; third, a device for amovable-table attachment with independent support that can be foldeddown or easily removed, reducing the machine to a smaller compass. Iattain these objects by the mechanism illustrated in the drawings.

Figure 1 is a perspective view of the complete device. Fig. 2 shows thefollower provided with gage-pins, and position of the eccentric leverswith the foot plate or treadle down. Fig. 3 represents thecylinder-former with its recesses lengthwise under the hooking-catchesand the cylinder-head 7c. Fig. 4 is a view of the movable table andbracketsupports with latch drop and catches.

Similarletters refer to similar parts throughout the several views.

On legs B B, supplied with brace-rods a a, is placed bed-plate A, onwhich are standards (J O, with cross-bars c c, which constitute theframe-work of the machine. Between standards O O is placed follower D,over spiral springs Z) Z), inserted in bed-plate A, driving the followerD against the lever-dogs E E, pinned to crossbars c c, and working underconnecting-lever d, with anti-friction roller a rolling under lever F,attached to standard 0 and governed by draft-rod G, passing through'forated head 75.

brace a, having treadle H attached, and spring I, connected with bedplate A. Follower D is provided with automatic gage-pins ff, held byset-screws, for the purpose of securing the gage-pins ff to place infollower D, the under surface of which is provided with a slight set-offto form a groove on the metal sheets between set-off and gage pins f f,all of which are acted upon simultaneously with the movement of treadleH.

Cylinder-former K, provided with shaft resting upon arms J J, passingthrough legs B B diagonally, and secured by set-screws, is constructedwith heads is 7c, one of which is attached to arm J, the opposite headattached to cylinder and perforated for the reception of spring-ratchetL, secured to opposite arm J, which is provided with set-screws to carrythe points of ratchet L to and from the per- Lengthwise the cylinder Kare hook-catches, to hold the strip while forming, correspondinggrooves, to allow the coil to shake loose when removing, and the adversecatches for the purpose of coiling the opposite way.

Movable table M is provided with adjustable hinges attached to bed-plateA, supported by circular brackets a n, and secured by latch O, droppingin catches out in brackets n n, and resting against legs 13 B. Raisedgages m m 011 table M correspond with line-gages of bed-plate A, andheads to cylinder-former K.

To enable others to use my improvement in a machine for crossseainingsheet metal, I will describe it more in detail, referring to thedrawings, and to the letters marked thereon.

The improvement consists in a device for pressing the locks of sheetmetal together for roofing or valley purposes, and at the same timecoiling the strip.

' The bed-plate A upon legs 13 13, provided with braces to a, supportsstandard C O with cross-bars c c, all of which constitute the frameworkof the machine. The follower D, placed between standards 0 O, is raisedby springs (not shown) inserted in bed-plate A to the lever-dogs E E,pinned to crossbars c 0. Over the lever-dogs is placed aconnecting-1cve1', cl, provided with an anti-friction roller, 0, workingunder lever F, that is attached to standard 0, the opposite end of thelever being provided with suspended draftrod G, passing through anorifice in brace a, having the treadle H attached for the use of thefoot. Spring I, hooked to treadle H, connects with the under side ofbed-plate A, to lift the weight of the levers. It will be observed thatthere are small gagepins f f inserted through follower D, fastenedbysetscrews, and automatically working against cross-bar c and bed-plateA. The arms J J, passing through the legs B B, and fastened byset-screws, are placed on an angle, acting as braces to the framework,and for the purpose '.of raising and extending the cylinder-formerK,'that rests by the shaft on the arms J J, this being provided withheads 70 7c, one upon the arm J,. the opposite upon the. cylindenandperforated for the admission of the springratchet L, which is attachedto arm J, the spring-ratchet being made to work either side by the useof set-screws. The former K can be used either to coil over or under, asthe case demands. To provide for this, hookcatches are so constructedwith corresponding recesses or grooves lengthwise the cylinder to allowthe lock to catch the edge for either process in coiling the strip. Atthe opposite side of bed-plate A is attached the movable table M, soconstructed as to easily rise or fall to reduce the compass of themachine, and is independent in its support by means of circular bracketsn a, passing from under bedplate A; and fastened securely by latch 0against legs B B. Thus by placing the metal sheets prepared foracontinuous strip against the line-gages provided upon table M, they arepassed on to bed-plate A until the lock vgage-pins f f.

strikes against gage-pins f f under follower l), which is formed toproduce a slight set-off upon the metal for the protection of the lock.The foot pressed upon treadle H closes the lock.. The strip is thencaught onto former K and drawn until the next lock strikes the The coilcompleted, lift the former from its bearings, and the coil will slip.from the cylinder.

What I claim as new and as my invention, and desire to secure by LettersPatent, is-

1. A cross-locking seamer having a bedplate, A, upon legs B B,supporting-standards U G, with cross-bars c c, in combination withfollower D, springs b b, gagepinsf f, leverdogs E E, connecting-lever d,anti-friction roller 6, lever F, draft-rod G, treadle H, and spring I,connected to bed-plate A, substantially as set forth.

2. The combination of the cylinder K, having hook-catches andcorresponding grooves or recesses and adverse catches for oppositecoiling, and provided with head-plates 7c and center crank-shaft, withthe arms J J and spring-ratchet L, supported by legs B B, and means foroperating, substantially as described.

3. A movable table, M, having line-guides m m, and hinged to bed-plateA, supported by brackets a n, with catch-stops provided for latch O, incombination with and resting against legs B B, substantially as hereinshown and described, for the purposes set forth.

OBRIN W. BUBBITT. Vi tn csses:

JAMES B. PALMER, WILLIAM Vv. HALooMB.

